. >> reporter: vice president joe biden and his wife joined volunteers assembling care packages for soldiers. all told the white house says volunteers in all 50 states pitched in. ♪ ♪ at a volunteer summit designed to recruit year-round volunteers we met erica chain who came -- erica chain who came all the way from san francisco. she painted is washington, d.c. elementary school a day after meeting mr. obama face the face. >> it's unreal. i walked out of the oval office yesterday and i had to have someone from tech pinch me and i said i felt it. it's really. it did happen. and it's really just an honor. >> reporter: it was chain's way of saying thank you to the obama campaign. chain suffered a brain tumor in 2010 while she was out of the country and uninsured. >> i started applying to every insurance plan that i could because they had to perform brain surgery to keep me alive. every plan you can think of. all of them, denied me. >> reporter: in this video which she made for the obama campaign, she says the only reason she was able to get insurance for her pre-existing condition was becau